top of page

VERGLEICH ZWISCHEN INDISCHEN ABACUS
UND ALTER ABAKUS

Error free calculation

Indian Abacus for student.png

العداد القديم

Beads and background are of close colours (Brown and Black) and there is no differentiation.

العداد الهندي

Sliders are chosen to hide and unhide the colour images (Red and Green) displayed for specific values. Visualization and image memory are 100%.

Old Abacus.jpeg

bottom of page